9Jozef Lis, Anna Pasieczna, Ryszard Strzelecki, etc. Geochemical and radioactivity mapping in Poland[J]. Journal of Geochenmical Exploration, 1997, (60) :39 53.
10[6]BREUNING M.An approach to the integration of spatial data and systems for 3D geo-information system[J].Computers & Geosciences,1999,25(1):39-48.
